1) 95
2) 31/14
3) 35
4) 1,25
11ab-11a=11a(b-1)
5x(3x^2-2x-4)=15x^3-10x^2-20x
<span>а) 16-x² = (4-х)*(4+х)
б) -0,36а²+b²=(b-0,6a)*(b+0,6a)
в) (с-1)²-9=(с-1-3)*(с-1+3)=(с-4)*(с+2)</span>
- 216Х - 36 = 36 - 18X
- 216X + 18X = 36 + 36
- 198X = 72
X = - 72/198 = - 4/11